Home / 120,931.64-166,884.67-65,740.60

Finding the Fourth Proportional to 120,931.64, 166,884.67 and 65,740.60

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Solution

The fourth proportional to 120,931.64, 166,884.67 and 65,740.60 is: 90,721.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,931.64 : 166,884.67 = 65,740.60 : x
  2. Step 2: Convert to fraction form
    120,931.64/166,884.67 = 65,740.60/x
  3. Step 3: Cross multiply
    120,931.64x = 166,884.67 × 65,740.60
  4. Step 4: Simplify right side
    120,931.64x = 10,971,098,336.60
  5. Step 5: Solve for x
    x = 10,971,098,336.60/120,931.64
  6. Step 6: Final answer
    x = 90,721.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.